Style/SpaceAfterNot breaking for "not"

[NobodysNightmare]

Expected behavior

Style/SpaceAfterNot does not force keyword not occurences to lose their space:

• It does not report an offense for not foo
• It does not auto correct it to notfoo

Actual behavior

• It does report an offense for not foo
• It does auto correct it to notfoo

Steps to reproduce the problem

Create a file called repro.rb:

foo if not bar

Run:

$ rubocop repro.rb --only Style/SpaceAfterNot

(Alternatively disable the cop Style/Not via your config file, which should be quite a legit use case)

RuboCop version

Include the output of rubocop -V:

$ rubocop -V
0.40.0 (using Parser 2.3.1.0, running on ruby 2.3.0 x86_64-linux)

[NobodysNightmare]

I am working on a fix...